143 lines
4.0 KiB
C++
143 lines
4.0 KiB
C++
#include "SkBitmap.h"
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#include "SkColorPriv.h"
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#include "SkMath.h"
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#if defined(SK_BUILD_FOR_MAC) && !defined(SK_USE_WXWIDGETS)
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#include <ApplicationServices/ApplicationServices.h>
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#ifndef __ppc__
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#define SWAP_16BIT
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#endif
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static void convertGL32_to_Mac32(uint32_t dst[], const SkBitmap& bm) {
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memcpy(dst, bm.getPixels(), bm.getSize());
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return;
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uint32_t* stop = dst + (bm.getSize() >> 2);
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const uint8_t* src = (const uint8_t*)bm.getPixels();
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while (dst < stop) {
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*dst++ = src[2] << 24 | src[1] << 16 | src[0] << 8 | src[3] << 0;
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src += sizeof(uint32_t);
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}
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}
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static void convert565_to_32(uint32_t dst[], const SkBitmap& bm) {
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for (int y = 0; y < bm.height(); y++) {
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const uint16_t* src = bm.getAddr16(0, y);
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const uint16_t* stop = src + bm.width();
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while (src < stop) {
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unsigned c = *src++;
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unsigned r = SkPacked16ToR32(c);
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unsigned g = SkPacked16ToG32(c);
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unsigned b = SkPacked16ToB32(c);
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*dst++ = (b << 24) | (g << 16) | (r << 8) | 0xFF;
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}
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}
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}
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static void convert4444_to_555(uint16_t dst[], const uint16_t src[], int count)
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{
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const uint16_t* stop = src + count;
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while (src < stop)
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{
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unsigned c = *src++;
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unsigned r = SkGetPackedR4444(c);
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unsigned g = SkGetPackedG4444(c);
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unsigned b = SkGetPackedB4444(c);
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// convert to 5 bits
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r = (r << 1) | (r >> 3);
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g = (g << 1) | (g >> 3);
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b = (b << 1) | (b >> 3);
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// build the 555
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c = (r << 10) | (g << 5) | b;
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#ifdef SWAP_16BIT
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c = (c >> 8) | (c << 8);
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#endif
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*dst++ = c;
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}
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}
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#include "SkTemplates.h"
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static CGImageRef bitmap2imageref(const SkBitmap& bm) {
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size_t bitsPerComp;
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size_t bitsPerPixel;
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CGBitmapInfo info;
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CGColorSpaceRef cs = CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB);
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CGDataProviderRef data = CGDataProviderCreateWithData(NULL,
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bm.getPixels(),
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bm.getSize(),
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NULL);
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SkAutoTCallVProc<CGDataProvider, CGDataProviderRelease> acp(data);
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SkAutoTCallVProc<CGColorSpace, CGColorSpaceRelease> acp2(cs);
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switch (bm.config()) {
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case SkBitmap::kARGB_8888_Config:
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bitsPerComp = 8;
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bitsPerPixel = 32;
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info = kCGImageAlphaPremultipliedLast;
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break;
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case SkBitmap::kARGB_4444_Config:
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bitsPerComp = 4;
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bitsPerPixel = 16;
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info = kCGImageAlphaPremultipliedLast | kCGBitmapByteOrder16Little;
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break;
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#if 0 // not supported by quartz !!!
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case SkBitmap::kRGB_565_Config:
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bitsPerComp = 5;
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bitsPerPixel = 16;
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info = kCGImageAlphaNone | kCGBitmapByteOrder16Little;
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break;
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#endif
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default:
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return NULL;
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}
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return CGImageCreate(bm.width(), bm.height(), bitsPerComp, bitsPerPixel,
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bm.rowBytes(), cs, info, data,
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NULL, false, kCGRenderingIntentDefault);
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}
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void SkBitmap::drawToPort(WindowRef wind, CGContextRef cg) const {
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if (fPixels == NULL || fWidth == 0 || fHeight == 0) {
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return;
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}
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bool useQD = false;
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if (NULL == cg) {
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SetPortWindowPort(wind);
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QDBeginCGContext(GetWindowPort(wind), &cg);
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useQD = true;
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}
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SkBitmap bm;
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if (this->config() == kRGB_565_Config) {
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this->copyTo(&bm, kARGB_8888_Config);
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} else {
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bm = *this;
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}
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bm.lockPixels();
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CGImageRef image = bitmap2imageref(bm);
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if (image) {
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CGRect rect;
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rect.origin.x = rect.origin.y = 0;
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rect.size.width = bm.width();
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rect.size.height = bm.height();
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CGContextDrawImage(cg, rect, image);
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CGImageRelease(image);
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}
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if (useQD) {
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QDEndCGContext(GetWindowPort(wind), &cg);
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}
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}
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#endif
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